Torch 两个矩形框重叠面积的计算 （IoU between tow bounding box）

 

Torch 两个矩形框重叠面积的计算 （IoU between tow bounding box）

 

 

 

function DecideOberlap(BBox_x1, BBox_y1, BBox_x2, BBox_y2, BBox_gt_x1, BBox_gt_y1, BBox_gt_x2, BBox_gt_y2)  2 
    x1 = BBox_x1;  4     y1 = BBox_y1;  5     width1  = BBox_x2 - BBox_x1;  6     height1 = BBox_y2 - BBox_y1;  7 
    x2 = BBox_gt_x1;  9     y2 = BBox_gt_y1; 10     width2  = BBox_gt_x2 - BBox_gt_x1; 11     height2 = BBox_gt_y2 - BBox_gt_y1; 12 
    endx     = math.max(x1+width1, x2+width2); 14     startx     = math.min(x1, x2); 15     width     = width1 + width2 - (endx - startx); 16 
    endy = math.max(y1 + height1, y2 + height2); 18     starty = math.min(y1, y2); 19     height = height1 + height2 - (endy - starty); 20 
    if width<=0 or height<=0 then 22         ratio = 0; 23     else
        Area = width*height; 25         Area1 = width1*height1; 26         Area2 = width2*height2; 27         ratio = Area/Area1; 28  end 29 
    return ratio 31 
end